diff --git a/Gemfile b/Gemfile
index b2a65966..e816952d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -114,4 +114,4 @@ gem "strscan", "3.0.1"
 
 gem "vite_rails", "~> 3.0"
 
-gem "dockerfile-rails", ">= 1.6", :group => :development
+gem "dockerfile-rails", ">= 1.6", group: :development